1) No.XP was the last supported OS. 2) Not to speak of. Most of us have moved on to other things, and NetStumbler as a project hasn't been upgraded by the author for years.3) There is a small readme, which has some limited instructions. For more info, you can read the FAQ section, which was a bunch of user contributed Q&A's that covered most of the operational details of NS. For further reading, I'd humbly suggest "WarDriving: Drive Detect Defend", I was one of the authors, and wrote a several extensive chapters on using NS. It's out of print now (I think), but you should be able to find used copies on Amazon.